@julian Thought wrt usability of the keyword replacement and refusal to do thereof (ref post #18) - why not take a step similar to how wikis go and tack on a footnote link which would link to the appropriate segment at the bottom of the post.
ex "gh01234" -> "gh01234 [1]"
Best of both worlds. Users can find the actual embed they want to see info for, and you don't get weird voodoo going on.
Also hi.